2 Main program for the Midnight Commander
4 Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
5 2003, 2004, 2005, 2006, 2007, 2009, 2011
6 The Free Software Foundation, Inc.
9 Miguel de Icaza, 1994, 1995, 1996, 1997
10 Janne Kukonlehto, 1994, 1995
13 This file is part of the Midnight Commander.
15 The Midnight Commander is free software: you can redistribute it
16 and/or modify it under the terms of the GNU General Public License as
17 published by the Free Software Foundation, either version 3 of the License,
18 or (at your option) any later version.
20 The Midnight Commander is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program. If not, see <http://www.gnu.org/licenses/>.
30 * \brief Source: this is a main module
42 #include <pwd.h> /* for username in xterm title */
45 #include "lib/global.h"
47 #include "lib/event.h"
48 #include "lib/tty/tty.h"
49 #include "lib/tty/key.h" /* For init_key() */
51 #include "lib/filehighlight.h"
52 #include "lib/fileloc.h"
53 #include "lib/strutil.h"
55 #include "lib/vfs/vfs.h" /* vfs_init(), vfs_shut() */
57 #include "filemanager/midnight.h" /* current_panel */
58 #include "filemanager/treestore.h" /* tree_store_save */
59 #include "filemanager/layout.h" /* command_prompt */
60 #include "filemanager/ext.h" /* flush_extension_file() */
61 #include "filemanager/command.h" /* cmdline */
62 #include "filemanager/panel.h" /* panalized_panel */
64 #include "vfs/plugins_init.h"
66 #include "events_init.h"
69 #include "setup.h" /* load_setup() */
72 #include "lib/charsets.h"
73 #include "selcodepage.h"
74 #endif /* HAVE_CHARSET */
76 #include "consaver/cons.saver.h" /* cons_saver_pid */
80 /*** global variables ****************************************************************************/
82 mc_fhl_t
*mc_filehighlight
;
84 /* Set when main loop should be terminated */
88 /* Numbers of (file I/O) and (input/display) codepages. -1 if not selected */
89 int default_source_codepage
= -1;
90 char *autodetect_codeset
= NULL
;
91 gboolean is_autodetect_codeset_enabled
= FALSE
;
92 #endif /* !HAVE_CHARSET */
94 /* If true use the internal viewer */
95 int use_internal_view
= 1;
96 /* If set, use the builtin editor */
97 int use_internal_edit
= 1;
99 char *mc_run_param0
= NULL
;
100 char *mc_run_param1
= NULL
;
102 /* The user's shell */
106 const char *mc_prompt
= NULL
;
108 /* Set to TRUE to suppress printing the last directory */
109 int print_last_revert
= FALSE
;
111 /* If set, then print to the given file the last directory we were at */
112 char *last_wd_string
= NULL
;
114 /* index to record_macro_buf[], -1 if not recording a macro */
115 int macro_index
= -1;
118 struct macro_action_t record_macro_buf
[MAX_MACRO_LENGTH
];
122 /*** file scope macro definitions ****************************************************************/
124 /*** file scope type declarations ****************************************************************/
126 /*** file scope variables ************************************************************************/
128 /*** file scope functions ************************************************************************/
129 /* --------------------------------------------------------------------------------------------- */
134 const char *current_system_codepage
= NULL
;
136 current_system_codepage
= str_detect_termencoding ();
140 const char *_display_codepage
;
142 _display_codepage
= get_codepage_id (mc_global
.display_codepage
);
144 if (strcmp (_display_codepage
, current_system_codepage
) != 0)
146 mc_global
.display_codepage
= get_codepage_index (current_system_codepage
);
147 if (mc_global
.display_codepage
== -1)
148 mc_global
.display_codepage
= 0;
150 mc_config_set_string (mc_main_config
, "Misc", "display_codepage", cp_display
);
155 mc_global
.utf8_display
= str_isutf8 (current_system_codepage
);
158 /* --------------------------------------------------------------------------------------------- */
160 /** POSIX version. The only version we support. */
164 const char *shell_env
= getenv ("SHELL");
166 if ((shell_env
== NULL
) || (shell_env
[0] == '\0'))
169 pwd
= getpwuid (geteuid ());
171 shell
= g_strdup (pwd
->pw_shell
);
174 shell
= g_strdup (shell_env
);
176 if ((shell
== NULL
) || (shell
[0] == '\0'))
179 shell
= g_strdup ("/bin/sh");
183 /* --------------------------------------------------------------------------------------------- */
186 sigchld_handler_no_subshell (int sig
)
191 if (!mc_global
.tty
.console_flag
!= '\0')
194 /* COMMENT: if it were true that after the call to handle_console(..INIT)
195 the value of mc_global.tty.console_flag never changed, we could simply not install
196 this handler at all if (!mc_global.tty.console_flag && !mc_global.tty.use_subshell). */
198 /* That comment is no longer true. We need to wait() on a sigchld
199 handler (that's at least what the tarfs code expects currently). */
201 pid
= waitpid (cons_saver_pid
, &status
, WUNTRACED
| WNOHANG
);
203 if (pid
== cons_saver_pid
)
206 if (WIFSTOPPED (status
))
208 /* Someone has stopped cons.saver - restart it */
213 /* cons.saver has died - disable console saving */
214 handle_console (CONSOLE_DONE
);
215 mc_global
.tty
.console_flag
= '\0';
218 /* If we got here, some other child exited; ignore it */
219 #endif /* __linux__ */
224 /* --------------------------------------------------------------------------------------------- */
229 struct sigaction sigchld_action
;
231 sigchld_action
.sa_handler
=
232 #ifdef HAVE_SUBSHELL_SUPPORT
233 mc_global
.tty
.use_subshell
? sigchld_handler
:
234 #endif /* HAVE_SUBSHELL_SUPPORT */
235 sigchld_handler_no_subshell
;
237 sigemptyset (&sigchld_action
.sa_mask
);
240 sigchld_action
.sa_flags
= SA_RESTART
;
242 sigchld_action
.sa_flags
= 0;
243 #endif /* !SA_RESTART */
245 if (sigaction (SIGCHLD
, &sigchld_action
, NULL
) == -1)
247 #ifdef HAVE_SUBSHELL_SUPPORT
249 * This may happen on QNX Neutrino 6, where SA_RESTART
250 * is defined but not implemented. Fallback to no subshell.
252 mc_global
.tty
.use_subshell
= FALSE
;
253 #endif /* HAVE_SUBSHELL_SUPPORT */
257 /* --------------------------------------------------------------------------------------------- */
258 /*** public functions ****************************************************************************/
259 /* --------------------------------------------------------------------------------------------- */
262 do_cd (const vfs_path_t
* new_dir_vpath
, enum cd_enum exact
)
265 const vfs_path_t
*_new_dir_vpath
= new_dir_vpath
;
267 if (current_panel
->is_panelized
)
269 size_t new_vpath_len
;
271 new_vpath_len
= vfs_path_len (new_dir_vpath
);
272 if (vfs_path_ncmp (new_dir_vpath
, panelized_panel
.root_vpath
, new_vpath_len
) == 0)
273 _new_dir_vpath
= panelized_panel
.root_vpath
;
276 res
= do_panel_cd (current_panel
, _new_dir_vpath
, exact
);
281 const vfs_path_element_t
*path_element
;
283 path_element
= vfs_path_get_by_index (current_panel
->cwd_vpath
, -1);
284 if (path_element
->encoding
!= NULL
)
285 current_panel
->codepage
= get_codepage_index (path_element
->encoding
);
287 current_panel
->codepage
= SELECT_CHARSET_NO_TRANSLATE
;
289 #endif /* HAVE_CHARSET */
294 /* --------------------------------------------------------------------------------------------- */
296 #ifdef HAVE_SUBSHELL_SUPPORT
298 do_load_prompt (void)
300 gboolean ret
= FALSE
;
302 if (!read_subshell_prompt ())
305 /* Don't actually change the prompt if it's invisible */
306 if (((Dlg_head
*) top_dlg
->data
== midnight_dlg
) && command_prompt
)
310 /* since the prompt has changed, and we are called from one of the
311 * tty_get_event channels, the prompt updating does not take place
312 * automatically: force a cursor update and a screen refresh
314 update_cursor (midnight_dlg
);
318 update_subshell_prompt
= TRUE
;
322 /* --------------------------------------------------------------------------------------------- */
325 load_prompt (int fd
, void *unused
)
333 #endif /* HAVE_SUBSHELL_SUPPORT */
335 /* --------------------------------------------------------------------------------------------- */
338 title_path_prepare (char **path
, char **login
)
342 struct passwd
*pw
= NULL
;
349 vfs_path_to_str_flags (current_panel
->cwd_vpath
, 0, VPF_STRIP_HOME
| VPF_STRIP_PASSWORD
);
350 res
= gethostname (host
, sizeof (host
));
352 { /* On success, res = 0 */
357 host
[sizeof (host
) - 1] = '\0';
359 pw
= getpwuid (getuid ());
362 *login
= g_strdup_printf ("%s@%s", pw
->pw_name
, host
);
366 *login
= g_strdup (host
);
370 /* --------------------------------------------------------------------------------------------- */
372 /** Show current directory in the xterm title */
374 update_xterm_title_path (void)
380 if (!(mc_global
.tty
.xterm_flag
&& xterm_title
))
383 title_path_prepare (&path
, &login
);
385 p
= g_strdup_printf ("mc [%s]:%s", login
, path
);
386 fprintf (stdout
, "\33]0;%s\7", str_term_form (p
));
389 if (!mc_global
.tty
.alternate_plus_minus
)
390 numeric_keypad_mode ();
391 (void) fflush (stdout
);
395 /* --------------------------------------------------------------------------------------------- */
398 main (int argc
, char *argv
[])
400 GError
*error
= NULL
;
401 gboolean isInitialized
;
403 /* We had LC_CTYPE before, LC_ALL includs LC_TYPE as well */
404 (void) setlocale (LC_ALL
, "");
405 (void) bindtextdomain ("mc", LOCALEDIR
);
406 (void) textdomain ("mc");
408 if (!events_init (&error
))
410 fprintf (stderr
, _("Failed to run:\n%s\n"), error
->message
);
411 g_error_free (error
);
412 (void) mc_event_deinit (NULL
);
416 /* Set up temporary directory */
421 str_init_strings (NULL
);
423 /* Initialize and create home directories */
424 /* do it after the screen library initialization to show the error message */
425 mc_config_init_config_paths (&error
);
427 if (error
== NULL
&& mc_config_deprecated_dir_present ())
428 mc_config_migrate_from_old_place (&error
);
432 vfs_setup_work_dir ();
434 if (!mc_args_handle (argc
, argv
, "mc"))
437 /* check terminal type
438 * $TEMR must be set and not empty
439 * mc_global.tty.xterm_flag is used in init_key() and tty_init()
440 * Do this after mc_args_handle() where mc_args__force_xterm is set up.
442 mc_global
.tty
.xterm_flag
= tty_check_term (mc_args__force_xterm
);
444 /* NOTE: This has to be called before tty_init or whatever routine
445 calls any define_sequence */
448 /* Must be done before installing the SIGCHLD handler [[FIXME]] */
449 handle_console (CONSOLE_INIT
);
451 #ifdef HAVE_SUBSHELL_SUPPORT
452 /* Don't use subshell when invoked as viewer or editor */
453 if (mc_global
.mc_run_mode
!= MC_RUN_FULL
)
454 mc_global
.tty
.use_subshell
= FALSE
;
456 if (mc_global
.tty
.use_subshell
)
457 subshell_get_console_attributes ();
458 #endif /* HAVE_SUBSHELL_SUPPORT */
460 /* Install the SIGCHLD handler; must be done before init_subshell() */
463 /* We need this, since ncurses endwin () doesn't restore the signals */
464 save_stop_handler ();
466 /* Must be done before init_subshell, to set up the terminal size: */
467 /* FIXME: Should be removed and LINES and COLS computed on subshell */
468 tty_init (!mc_args__nomouse
, mc_global
.tty
.xterm_flag
);
472 /* start check mc_global.display_codepage and mc_global.source_codepage */
475 /* Removing this from the X code let's us type C-c */
478 load_keymap_defs (!mc_args__nokeymap
);
480 macros_list
= g_array_new (TRUE
, FALSE
, sizeof (macros_t
));
482 tty_init_colors (mc_global
.tty
.disable_colors
, mc_args__force_colors
);
485 GError
*error2
= NULL
;
486 isInitialized
= mc_skin_init (&error2
);
487 mc_filehighlight
= mc_fhl_new (TRUE
);
488 dlg_set_default_colors ();
492 message (D_ERROR
, _("Warning"), "%s", error2
->message
);
493 g_error_free (error2
);
500 message (D_ERROR
, _("Warning"), "%s", error
->message
);
501 g_error_free (error
);
506 #ifdef HAVE_SUBSHELL_SUPPORT
507 /* Done here to ensure that the subshell doesn't */
508 /* inherit the file descriptors opened below, etc */
509 if (mc_global
.tty
.use_subshell
)
512 #endif /* HAVE_SUBSHELL_SUPPORT */
514 /* Also done after init_subshell, to save any shell init file messages */
515 if (mc_global
.tty
.console_flag
!= '\0')
516 handle_console (CONSOLE_SAVE
);
518 if (mc_global
.tty
.alternate_plus_minus
)
519 application_keypad_mode ();
521 #ifdef HAVE_SUBSHELL_SUPPORT
522 if (mc_global
.tty
.use_subshell
)
524 mc_prompt
= strip_ctrl_codes (subshell_prompt
);
525 if (mc_prompt
== NULL
)
526 mc_prompt
= (geteuid () == 0) ? "# " : "$ ";
529 #endif /* HAVE_SUBSHELL_SUPPORT */
530 mc_prompt
= (geteuid () == 0) ? "# " : "$ ";
532 /* Program main loop */
533 if (!mc_global
.widget
.midnight_shutdown
)
536 /* Save the tree store */
537 (void) tree_store_save ();
541 /* Virtual File System shutdown */
544 flush_extension_file (); /* does only free memory */
546 mc_fhl_free (&mc_filehighlight
);
554 if (mc_global
.tty
.console_flag
!= '\0' && (quit
& SUBSHELL_EXIT
) == 0)
555 handle_console (CONSOLE_RESTORE
);
556 if (mc_global
.tty
.alternate_plus_minus
)
557 numeric_keypad_mode ();
559 (void) signal (SIGCHLD
, SIG_DFL
); /* Disable the SIGCHLD handler */
561 if (mc_global
.tty
.console_flag
!= '\0')
562 handle_console (CONSOLE_DONE
);
564 if (mc_global
.mc_run_mode
== MC_RUN_FULL
&& mc_args__last_wd_file
!= NULL
565 && last_wd_string
!= NULL
&& !print_last_revert
)
569 last_wd_fd
= open (mc_args__last_wd_file
, O_WRONLY
| O_CREAT
| O_TRUNC
| O_EXCL
,
571 if (last_wd_fd
!= -1)
575 ret1
= write (last_wd_fd
, last_wd_string
, strlen (last_wd_string
));
576 ret2
= close (last_wd_fd
);
579 g_free (last_wd_string
);
585 if (macros_list
!= NULL
)
589 for (i
= 0; i
< macros_list
->len
; i
++)
591 macros
= &g_array_index (macros_list
, struct macros_t
, i
);
592 if (macros
!= NULL
&& macros
->macro
!= NULL
)
593 (void) g_array_free (macros
->macro
, FALSE
);
595 (void) g_array_free (macros_list
, TRUE
);
598 str_uninit_strings ();
600 g_free (mc_run_param0
);
601 g_free (mc_run_param1
);
603 (void) mc_event_deinit (&error
);
605 mc_config_deinit_config_paths ();
609 fprintf (stderr
, _("\nFailed while close:\n%s\n"), error
->message
);
610 g_error_free (error
);
614 (void) putchar ('\n'); /* Hack to make shell's prompt start at left of screen */
619 /* --------------------------------------------------------------------------------------------- */